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iOS Build a Photo Browser iPhone App Downloading Data with NSURLSession NSURLSession Basics

Posted by Jo Lingenfelter
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Jo Lingenfelter
Treehouse Project Reviewer

What's going wrong here? There is a mistake somewhere in this code, but I can't find it.

The Treehouse compiler won't open and let me see the error. This code seems to be working in X code, but it doesn't pass the coding challenge.

/* Add task 1 code here */
NSURL *url = [[NSURL alloc] initWithString: @"http://teamtreehouse.com"];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];

/* Add task 2 code below */
NSURLSessionDownloadTask *task = [session downloadTaskWithRequest:request completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {

        NSLog(@"Response:%@", response);
    }];

    [task resume];

1 Answer

Cindy Lea
PLUS
Cindy Lea
Courses Plus Student 6,497 Points
Cindy Lea
Cindy Lea
Courses Plus Student 6,497 Points

Try this:

/* Add task 1 code here */
NSURL *url = [[NSURL alloc] initWithString : @"http://teamtreehouse.com"];

NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
NSURLSession *session = [NSURLSession sharedSession];

/* Add task 2 code below */


NSURLSessionDownloadTask *task;

task = [session downloadTaskWithRequest:request completionHandler:^(NSURL *location,NSURLResponse *response, NSError *error){
NSLog(@"Response: %@", response);
}];

[task resume];
Jo Lingenfelter
.a{fill-rule:evenodd;}techdegree seal-36
Jo Lingenfelter
Treehouse Project Reviewer

Thanks so much!!! :)

Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Thanks Cindy,

This one tripped me up a bit too, as I was doing it all with one line of code. It's weird the code checker won't take 

NSURLSessionDownloadTask *task = [session downloadTaskWithRequest:request completionHandler:^(NSURL *location,NSURLResponse *response, NSError *error){
NSLog(@"Response: %@", response);
}];

[task resume];

as being correct. It's the same code, just on one line. ?? Gabe Nadel

:dizzy: